Abstract
This study aims to clarify the effects of GHG reduction by utilizing various sewage sludge fuels based on collaboration among sewage, industrial, and environmental infrastructures. As a result, the followings are observed: a) a low mixed combustion ratio causes limited GHG reduction in pulp industry, and it is important to take balances of regional sludge fuel and industrial fuel demand into account corresponding to industries; b) GHG inventory are compared for various sludge fuel utilization technologies based on reference materials, and adjacent of sewage and garbage incineration plants to reduce GHG caused by transportation of dewatered sludge; c) collaboration of sewage, industry and environmental infractructures can reduce 679 thousand tons of carbon dioxide per year, which is given by 85% of un-utilized sewage sludge; d)increase of mixed combustion ratio in pulp industry give great GHG reduction effects.
